package com.smart.community.property.controller;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;

import javax.servlet.http.HttpServletRequest;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import com.smart.community.commons.result.PageResult;
import com.smart.community.commons.result.Result;
import com.smart.community.commons.annotation.ApiLog;
import com.smart.community.commons.enums.ApiLogOperationType;

import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.tags.Tag;
import lombok.extern.slf4j.Slf4j;

/**
 * 在线支付管理控制器
 * @author Wu.Liang
 */
@Slf4j
@RestController
@RequestMapping("/property/payment")
@Tag(name = "在线支付", description = "在线支付相关接口")
public class OnlinePaymentController {

    /**
     * 创建支付订单
     */
    @PostMapping("/create")
    @Operation(summary = "创建支付订单", description = "创建在线支付订单")
    @ApiLog(
        logTitle = "创建在线支付订单",
        logType = 2,
        moduleName = "物业管理",
        operationType = ApiLogOperationType.ADD
    )
    public Result<Map<String, Object>> createPayment(
            @Parameter(description = "账单ID") @RequestParam Long billId,
            @Parameter(description = "支付金额") @RequestParam BigDecimal amount,
            @Parameter(description = "支付方式：wechat-微信，alipay-支付宝，bank-银行卡") @RequestParam String paymentMethod) throws Exception {
        
        log.info("创建支付订单，账单ID: {}, 金额: {}, 支付方式: {}", billId, amount, paymentMethod);
        
        // 生成订单号
        String orderNo = generateOrderNo();
        
        // 根据支付方式创建不同的支付订单
        Map<String, Object> paymentResult = new HashMap<>();
        switch (paymentMethod) {
            case "wechat":
                paymentResult = createWechatPayment(orderNo, amount);
                break;
            case "alipay":
                paymentResult = createAlipayPayment(orderNo, amount);
                break;
            case "bank":
                paymentResult = createBankPayment(orderNo, amount);
                break;
            default:
                return Result.error("不支持的支付方式");
        }
        
        // 保存支付订单到数据库
        // 这里需要实现具体的数据库保存逻辑
        
        // 记录支付订单创建日志
        log.info("支付订单创建成功，订单号: {}, 账单ID: {}", orderNo, billId);
        
        return Result.success(paymentResult);
    }

    /**
     * 查询支付状态
     */
    @GetMapping("/{orderNo}/status")
    @Operation(summary = "查询支付状态", description = "查询指定订单的支付状态")
    public Result<Map<String, Object>> getPaymentStatus(
            @Parameter(description = "订单号") @PathVariable String orderNo) throws Exception {
        
        log.info("查询支付状态，订单号: {}", orderNo);
        
        if (orderNo == null) {
            return Result.error("订单号不能为空");
        }
        
        // 这里应该查询数据库中的支付订单信息
        Map<String, Object> result = new HashMap<>();
        result.put("orderNo", orderNo);
        result.put("status", "pending"); // 待支付
        result.put("amount", "100.00");
        result.put("createTime", LocalDateTime.now());
        
        return Result.success(result);
    }

    /**
     * 分页查询支付记录
     */
    @GetMapping
    @Operation(summary = "分页查询支付记录", description = "支持按条件查询支付记录")
    public Result<PageResult<Map<String, Object>>> getPaymentRecords(
            @Parameter(description = "当前页") @RequestParam(defaultValue = "1") Integer current,
            @Parameter(description = "每页大小") @RequestParam(defaultValue = "10") Integer size,
            @Parameter(description = "用户ID") @RequestParam(required = false) Long userId,
            @Parameter(description = "支付状态：0-待支付，1-支付成功，2-支付失败，3-已取消") @RequestParam(required = false) Integer status,
            @Parameter(description = "支付方式") @RequestParam(required = false) String paymentMethod) throws Exception {
        
        log.info("分页查询支付记录，用户ID: {}, 状态: {}, 支付方式: {}, 当前页: {}, 每页大小: {}", 
                userId, status, paymentMethod, current, size);
        
        PageResult<Map<String, Object>> result = new PageResult<>(current, size, 0L, new java.util.ArrayList<>());
        
        return Result.success(result);
    }

    /**
     * 获取支付配置
     */
    @GetMapping("/config")
    @Operation(summary = "获取支付配置", description = "获取支付相关的配置信息")
    public Result<Map<String, Object>> getPaymentConfig() throws Exception {
        log.info("获取支付配置");
        
        Map<String, Object> result = new HashMap<>();
        result.put("wechatEnabled", true);
        result.put("alipayEnabled", true);
        result.put("bankEnabled", true);
        
        return Result.success(result);
    }

    /**
     * 获取支付统计信息
     */
    @GetMapping("/statistics")
    @Operation(summary = "获取支付统计信息", description = "获取支付相关的统计信息")
    public Result<Map<String, Object>> getPaymentStatistics(
            @Parameter(description = "社区ID") @RequestParam Long communityId,
            @Parameter(description = "开始日期") @RequestParam String startDate,
            @Parameter(description = "结束日期") @RequestParam String endDate) throws Exception {
        
        log.info("获取支付统计信息，社区ID: {}, 开始日期: {}, 结束日期: {}", communityId, startDate, endDate);
        
        Map<String, Object> result = new HashMap<>();
        result.put("totalAmount", "10000.00");
        result.put("totalCount", 100);
        result.put("successRate", "95.5%");
        
        return Result.success(result);
    }

    /**
     * 取消支付订单
     */
    @PostMapping("/{orderNo}/cancel")
    @Operation(summary = "取消支付订单", description = "取消指定的支付订单")
    @ApiLog(
        logTitle = "取消支付订单",
        logType = 2,
        moduleName = "物业管理",
        operationType = ApiLogOperationType.UPDATE
    )
    public Result<Boolean> cancelPayment(
            @Parameter(description = "订单号") @PathVariable String orderNo) throws Exception {
        
        log.info("取消支付订单，订单号: {}", orderNo);
        
        // 这里需要实现具体的取消逻辑
        
        return Result.success(true);
    }

    /**
     * 申请退款
     */
    @PostMapping("/{orderNo}/refund")
    @Operation(summary = "申请退款", description = "为已支付的订单申请退款")
    @ApiLog(
        logTitle = "申请支付退款",
        logType = 2,
        moduleName = "物业管理",
        operationType = ApiLogOperationType.UPDATE
    )
    public Result<Boolean> applyRefund(
            @Parameter(description = "订单号") @RequestParam String orderNo,
            @Parameter(description = "退款金额") @RequestParam BigDecimal refundAmount,
            @Parameter(description = "退款原因") @RequestParam String refundReason) throws Exception {
        
        log.info("申请退款，订单号: {}, 退款金额: {}, 退款原因: {}", orderNo, refundAmount, refundReason);
        
        // 这里需要实现具体的退款逻辑
        
        return Result.success(true);
    }

    /**
     * 生成支付二维码
     */
    @PostMapping("/qrcode")
    @Operation(summary = "生成支付二维码", description = "生成支付二维码")
    @ApiLog(
        logTitle = "生成支付二维码",
        logType = 2,
        moduleName = "物业管理",
        operationType = ApiLogOperationType.ADD
    )
    public Result<String> generatePaymentQrCode(
            @Parameter(description = "订单号") @RequestParam String orderNo,
            @Parameter(description = "支付方式") @RequestParam String paymentMethod) throws Exception {
        
        log.info("生成支付二维码，订单号: {}, 支付方式: {}", orderNo, paymentMethod);
        
        // 这里需要实现具体的二维码生成逻辑
        String qrCodeUrl = "https://example.com/qrcode/" + orderNo;
        
        return Result.success(qrCodeUrl);
    }

    /**
     * 微信支付回调
     */
    @PostMapping("/wechat/notify")
    @Operation(summary = "微信支付回调", description = "处理微信支付回调通知")
    public String wechatPayNotify(HttpServletRequest request) throws Exception {
        log.info("收到微信支付回调通知");
        
        try {
            // 获取回调数据
            String notifyData = getNotifyData(request);
            
            // 验证签名
            if (!verifyWechatSignature(notifyData, request)) {
                log.error("微信支付回调签名验证失败");
                return "FAIL";
            }
            
            // 解析回调数据
            Map<String, String> notifyMap = parseWechatNotifyData(notifyData);
            
            // 更新支付状态
            if (updatePaymentStatus(notifyMap)) {
                log.info("微信支付回调处理成功");
                return "SUCCESS";
            } else {
                log.error("微信支付回调处理失败");
                return "FAIL";
            }
        } catch (Exception e) {
            log.error("微信支付回调处理异常", e);
            return "FAIL";
        }
    }

    /**
     * 银行卡支付回调
     */
    @PostMapping("/bank/notify")
    @Operation(summary = "银行卡支付回调", description = "处理银行卡支付回调通知")
    public String bankPayNotify(HttpServletRequest request) throws Exception {
        log.info("收到银行卡支付回调通知");
        
        try {
            // 获取回调数据
            String notifyData = getNotifyData(request);
            
            // 验证签名
            if (!verifyBankSignature(notifyData, request)) {
                log.error("银行卡支付回调签名验证失败");
                return "FAIL";
            }
            
            // 解析回调数据
            Map<String, String> notifyMap = parseBankNotifyData(notifyData);
            
            // 更新支付状态
            if (updatePaymentStatus(notifyMap)) {
                log.info("银行卡支付回调处理成功");
                return "SUCCESS";
            } else {
                log.error("银行卡支付回调处理失败");
                return "FAIL";
            }
        } catch (Exception e) {
            log.error("银行卡支付回调处理异常", e);
            return "FAIL";
        }
    }

    /**
     * 支付宝支付回调
     */
    @PostMapping("/alipay/notify")
    @Operation(summary = "支付宝支付回调", description = "处理支付宝支付回调通知")
    public String alipayPayNotify(HttpServletRequest request) throws Exception {
        log.info("收到支付宝支付回调通知");
        
        try {
            // 获取回调数据
            String notifyData = getNotifyData(request);
            
            // 验证签名
            if (!verifyAlipaySignature(notifyData, request)) {
                log.error("支付宝支付回调签名验证失败");
                return "FAIL";
            }
            
            // 解析回调数据
            Map<String, String> notifyMap = parseAlipayNotifyData(notifyData);
            
            // 更新支付状态
            if (updatePaymentStatus(notifyMap)) {
                log.info("支付宝支付回调处理成功");
                return "SUCCESS";
            } else {
                log.error("支付宝支付回调处理失败");
                return "FAIL";
            }
        } catch (Exception e) {
            log.error("支付宝支付回调处理异常", e);
            return "FAIL";
        }
    }

    // 私有辅助方法
    private String generateOrderNo() {
        return "PAY" + System.currentTimeMillis() + new Random().nextInt(1000);
    }

    private Map<String, Object> createWechatPayment(String orderNo, BigDecimal amount) throws Exception {
        Map<String, Object> result = new HashMap<>();
        result.put("orderNo", orderNo);
        result.put("paymentUrl", "https://wx.tenpay.com/pay/" + orderNo);
        return result;
    }

    private Map<String, Object> createAlipayPayment(String orderNo, BigDecimal amount) throws Exception {
        Map<String, Object> result = new HashMap<>();
        result.put("orderNo", orderNo);
        result.put("paymentUrl", "https://openapi.alipay.com/pay/" + orderNo);
        return result;
    }

    private Map<String, Object> createBankPayment(String orderNo, BigDecimal amount) throws Exception {
        Map<String, Object> result = new HashMap<>();
        result.put("orderNo", orderNo);
        result.put("paymentUrl", "https://bank.example.com/pay/" + orderNo);
        return result;
    }

    private boolean updatePaymentStatus(Map<String, String> notifyMap) throws Exception {
        String orderNo = notifyMap.get("orderNo");
        String transactionId = notifyMap.get("transactionId");
        String resultCode = notifyMap.get("resultCode");
        
        // 更新支付订单状态
        if (!updatePaymentOrderStatus(orderNo, transactionId, resultCode)) {
            return false;
        }
        
        // 如果支付成功，更新账单状态
        if ("SUCCESS".equals(resultCode)) {
            if (!updateBillPaymentStatus(orderNo, transactionId)) {
                return false;
            }
            
            // 记录支付成功日志
            logPaymentSuccess(orderNo, transactionId, notifyMap);
            
            // 发送支付成功通知
            sendPaymentSuccessNotification(orderNo);
        }
        
        return true;
    }

    private boolean updatePaymentOrderStatus(String orderNo, String transactionId, String resultCode) throws Exception {
        // 这里需要实现具体的数据库更新逻辑
        log.info("更新支付订单状态，订单号: {}, 交易ID: {}, 结果码: {}", orderNo, transactionId, resultCode);
        return true;
    }

    private boolean updateBillPaymentStatus(String orderNo, String transactionId) throws Exception {
        // 这里需要实现具体的账单状态更新逻辑
        log.info("更新账单支付状态，订单号: {}, 交易ID: {}", orderNo, transactionId);
        return true;
    }

    private void logPaymentSuccess(String orderNo, String transactionId, Map<String, String> notifyMap) throws Exception {
        log.info("支付成功，订单号: {}, 交易ID: {}, 回调数据: {}", orderNo, transactionId, notifyMap);
    }

    private void sendPaymentSuccessNotification(String orderNo) throws Exception {
        // 这里需要实现具体的通知发送逻辑
        log.info("发送支付成功通知，订单号: {}", orderNo);
    }

    private String getNotifyData(HttpServletRequest request) throws Exception {
        // 这里需要实现具体的回调数据获取逻辑
        return "notify_data";
    }

    private boolean verifyWechatSignature(String notifyData, HttpServletRequest request) throws Exception {
        // 这里需要实现具体的微信签名验证逻辑
        return true;
    }

    private boolean verifyBankSignature(String notifyData, HttpServletRequest request) throws Exception {
        // 这里需要实现具体的银行卡签名验证逻辑
        return true;
    }

    private boolean verifyAlipaySignature(String notifyData, HttpServletRequest request) throws Exception {
        // 这里需要实现具体的支付宝签名验证逻辑
        return true;
    }

    private Map<String, String> parseWechatNotifyData(String notifyData) throws Exception {
        // 这里需要实现具体的微信回调数据解析逻辑
        Map<String, String> result = new HashMap<>();
        result.put("orderNo", "ORDER123");
        result.put("transactionId", "TXN123");
        result.put("resultCode", "SUCCESS");
        return result;
    }

    private Map<String, String> parseBankNotifyData(String notifyData) throws Exception {
        // 这里需要实现具体的银行卡回调数据解析逻辑
        Map<String, String> result = new HashMap<>();
        result.put("orderNo", "ORDER123");
        result.put("transactionId", "TXN123");
        result.put("resultCode", "SUCCESS");
        return result;
    }

    private Map<String, String> parseAlipayNotifyData(String notifyData) throws Exception {
        // 这里需要实现具体的支付宝回调数据解析逻辑
        Map<String, String> result = new HashMap<>();
        result.put("orderNo", "ORDER123");
        result.put("transactionId", "TXN123");
        result.put("resultCode", "SUCCESS");
        return result;
    }
}
